> For the complete documentation index, see [llms.txt](https://docs-v4.venus.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-v4.venus.io/technical-reference/reference-core-pool/vbnbadmin.md).

# VBNBAdmin

## VBNBAdmin

This contract is the "admin" of the vBNB market, reducing the reserves of the market, sending them to the `ProtocolShareReserve` contract, and allowing the executions of the rest of the privileged functions in the vBNB contract (after checking if the sender has the required permissions).

## Solidity API

#### vBNB

address of vBNB

```solidity
contract VTokenInterface vBNB
```

***

#### WBNB

address of WBNB contract

```solidity
contract IWBNB WBNB
```

***

#### initialize

Used to initialize non-immutable variables

```solidity
function initialize(contract IProtocolShareReserve _protocolShareReserve, address accessControlManager) external
```

***

#### setProtocolShareReserve

PSR setter.

```solidity
function setProtocolShareReserve(contract IProtocolShareReserve protocolShareReserve_) external
```

**Parameters**

| Name                   | Type                           | Description                 |
| ---------------------- | ------------------------------ | --------------------------- |
| protocolShareReserve\_ | contract IProtocolShareReserve | Address of the PSR contract |

**📅 Events**

* Emits ProtocolShareReserveUpdated event.

**⛔️ Access Requirements**

* Only owner (Governance)

***

#### reduceReserves

Reduce reserves of vBNB, wrap them and send them to the PSR contract

```solidity
function reduceReserves(uint256 reduceAmount) external
```

**Parameters**

| Name         | Type    | Description                  |
| ------------ | ------- | ---------------------------- |
| reduceAmount | uint256 | amount of reserves to reduce |

**📅 Events**

* Emits ReservesReduced event.

***

#### setInterestRateModel

Sets the interest rate model of the vBNB contract

```solidity
function setInterestRateModel(address newInterestRateModel) public returns (uint256)
```

**Parameters**

| Name                 | Type    | Description                            |
| -------------------- | ------- | -------------------------------------- |
| newInterestRateModel | address | Address of the new interest rate model |

**⛔️ Access Requirements**

* Controlled by ACM

***

#### receive

Invoked when BNB is sent to this contract

```solidity
receive() external payable
```

**⛔️ Access Requirements**

* Only vBNB is considered a valid sender

***

#### fallback

Invoked when called function does not exist in the contract. The function will be executed in the vBNB contract.

```solidity
fallback(bytes data) external payable returns (bytes)
```

**⛔️ Access Requirements**

* Only owner (Governance)

***


---

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